Rule 34 Dev - anthro areola barn bell bell_collar big_breasts blush bondage bound bovid bovine breast_expansion breasts cattle collar collar_only colored cow_girl cowgirl female green_eyes green_hair growth hair hooves horn horn_growth huge_breasts human large_breasts looking_at_viewer mammal mid_transformation multi_breast nipples nude pubes small_breasts solo species_transformation tail_growth transformation yeamurumi|6396512008